I’d respect Google more if they came out and said, “This is a change in the way we’ve presented search results in the past and here’s why…” than make another statement trying to throw blame back at Twitter and Facebook. Quibbling and asterisks aren’t going to work, because Google is the one who made the unequivocal statements to begin with. Don’t make this become an issue for anti-trust lawyers, because that’s not the point. This is between you and your users, Google.